compilation support for IDF4.4.3, plus compiling for ESP32-S3

- Updated ESP32 targets to use IDF 4.4.3 (thanks tasmota!)
- Fixed a compilation problem in ARTI (WLED_FS instead of LITTLEFS)

- Initial compilation support for ESP32-S3. Warning: there are still many problems to be solved before -S3 becomes usable!
- audioreactive: added #ifdef for features not yet supported on ESP32-S3

usermods/audioreactive/audio_source.h

@@ -13,6 +13,11 @@
 //#include <driver/i2s_pdm.h>
 //#include <driver/gpio.h>
 
+// see https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/hw-reference/chip-series-comparison.html#related-documents
+// and https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/peripherals/i2s.html#overview-of-all-modes
+#if defined(CONFIG_IDF_TARGET_ESP32C2) || defined(CONFIG_IDF_TARGET_ESP32S2)
+  #error This audio reactive usermod does not support the ESP32-C2 or ESP32-S2, because the device has too limited I2S capabilities
+#endif
 
 /* ToDo: remove. ES7243 is controlled via compiler defines
    Until this configuration is moved to the webinterface
@@ -222,6 +227,9 @@ class I2SSource : public AudioSource {
 
   protected:
     void _routeMclk(int8_t mclkPin) {
+#if !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32S3)
+    // this way of MCLK routing only works on "classic" ESP32
+
       /* Enable the mclk routing depending on the selected mclk pin
           Only I2S_NUM_0 is supported
       */
@@ -235,6 +243,9 @@ class I2SSource : public AudioSource {
         PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0RXD_U, FUNC_U0RXD_CLK_OUT2);
         WRITE_PERI_REG(PIN_CTRL, 0xFF00);
       }
+#else
+#warning FIX ME!
+#endif
     }
 
     i2s_config_t _config;
@@ -307,6 +318,9 @@ public:
     int8_t pin_ES7243_SCL;
 };
 
+#if !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32S3)
+// ADC over I2S is only availeable in "claasic" ESP32
+
 /* ADC over I2S Microphone
    This microphone is an ADC pin sampled via the I2S interval
    This allows to use the I2S API to obtain ADC samples with high sample rates
@@ -489,6 +503,7 @@ class I2SAdcSource : public I2SSource {
     int8_t _audioPin;
     int8_t _myADCchannel = 0x0F;       // current ADC channel for analog input. 0x0F means "undefined"
 };
+#endif
 
 /* SPH0645 Microphone
    This is an I2S microphone with some timing quirks that need
@@ -502,7 +517,12 @@ class SPH0654 : public I2SSource {
 
     void initialize(uint8_t i2swsPin, uint8_t i2ssdPin, uint8_t i2sckPin, int8_t = I2S_PIN_NO_CHANGE, int8_t = I2S_PIN_NO_CHANGE, int8_t = I2S_PIN_NO_CHANGE) {
       I2SSource::initialize(i2swsPin, i2ssdPin, i2sckPin);
+#if !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32S3)
+// these registers are only existing in "claasic" ESP32
       REG_SET_BIT(I2S_TIMING_REG(I2S_NUM_0), BIT(9));
       REG_SET_BIT(I2S_CONF_REG(I2S_NUM_0), I2S_RX_MSB_SHIFT);
+#else
+      #warning FIX ME! Please.
+#endif
     }
 };